kolibrios/kernel/branches/Kolibri-acpi/blkdev/fdc.inc

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;                                                              ;;
;; Copyright (C) KolibriOS team 2004-2011. All rights reserved. ;;
;; Copyright (C) MenuetOS 2000-2004 Ville Mikael Turjanmaa      ;;
;; Distributed under terms of the GNU General Public License    ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

$Revision$


iglobal
  ;function pointers.
  fdc_irq_func	  dd fdc_null
endg

uglobal
  dmasize	  db 0x0
  dmamode	  db 0x0
endg

fdc_init:				;start with clean tracks.
        mov     edi, OS_BASE+0xD201
        mov     al, 0
        mov     ecx, 160
	rep stosb
        ret

fdc_irq:
	call [fdc_irq_func]
fdc_null:
        ret

save_image:
    call   reserve_flp
    call   restorefatchain
    pusha
    call   check_label
        cmp     [FDC_Status], 0
    jne    unnecessary_save_image
        mov     [FDD_Track], 0; <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
        mov     [FDD_Head], 0; <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
        mov     [FDD_Sector], 1; <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
        mov     esi, RAMDISK
    call   SeekTrack
save_image_1:
    push   esi
    call   take_data_from_application_1
    pop    esi
        add     esi, 512
    call   WriteSectWithRetr
;    call   WriteSector
        cmp     [FDC_Status], 0
    jne    unnecessary_save_image
    inc    [FDD_Sector]
        cmp     [FDD_Sector], 19
    jne    save_image_1
        mov     [FDD_Sector], 1
    inc    [FDD_Head]
        cmp     [FDD_Head], 2
    jne    save_image_1
        mov     [FDD_Head], 0
    inc    [FDD_Track]
    call   SeekTrack
        cmp     [FDD_Track], 80
    jne    save_image_1
unnecessary_save_image:
        mov     [fdc_irq_func], fdc_null
    popa
        mov     [flp_status], 0
    ret